Software Development C#

Varun Nerella

Full Stack .Net Developer

Email: ********.**@*****.*** / Ph: 262-***-****

LinkedIn: https://www.linkedin.com/in/varun-nerella-2348971b8/

PROFESSIONAL SUMMARY

Over 10 years of professional IT experience encompassing the entire Software Development Lifecycle (SDLC), including requirements gathering, analysis, architectural modeling, design, development, testing, implementation, and production support.

Expertise in developing web and client/server applications utilizing .NET technologies and implementing N-Tier architecture. Proficient in CI/CD workflows using Azure DevOps, Jenkins, Ant, Maven, and Git.

Skilled in creating web and Windows-based applications using MVC, ASP.NET, C#, Entity Framework, Arc GIS, Arc OBJECT, Enterprise Library, Web Services, IIS, XML, and XSLT.

Developed custom applications using C# and .NET Framework to automate and control analytical instruments, including LC/MS systems

Experienced in designing responsive and interactive web pages using HTML5, CSS3, JavaScript, Django, Flask, jQuery, Angular Framework, Blazor, and Bootstrap in hand-coded environments.

Hands-on experience with front-end and back-end development using .NET Framework 4.8/4.5/3.0/3.5, Visual Studio 2019/2017/2015, and JavaScript frameworks like React.js and Ember.js.

Proficient in React.js for building interactive UIs with concepts like one-way data flow, virtual DOM, JSX, and React Native.

Strong background in database technologies, including SQL Server, MongoDB, Raven DB, T-SQL, and PL/SQL, with expertise in creating and managing database layers, stored procedures, triggers, and optimizing performance.

Adept at creating loosely coupled classes using Dependency Injection for better maintainability and modularity.

Extensive experience in building and maintaining end-to-end testing suites, web applications, and single-page applications (SPA) using frameworks like Angular, React, and Node.js.

Proficient in cloud computing and deployment, including AWS services (EC2, S3, VPC, ELB, RDS) and Azure cloud solutions with monitoring tools like CloudWatch and DataDog.

Expertise in developing applications using Service-Oriented Architecture (SOA) and Microservices architecture with RabbitMQ, ActiveMQ, and RESTful APIs.

Developed secure, scalable, and high-performing applications with experience in performance tuning, load balancing, and system monitoring.

Strong experience in database programming using SQL Server Integration Services (SSIS), SQL Server Reporting Services (SSRS), and Data Warehousing.

Skilled in developing test automation frameworks and performing cross-browser testing using tools and frameworks like Selenium, Protractor.js, and Cucumber.

Proficient in Agile, Waterfall, and Hybrid development methodologies, mentoring teams and guiding projects through successful execution.

Extensive knowledge of front-end libraries and frameworks such as React.js, AngularJS, TypeScript, and Bootstrap, combined with a strong background in backend services and integrations.

Hands-on experience in developing APIs, implementing SOA-based architectures, and creating Microservices on cloud platforms.

Strong knowledge of version control systems such as Git, TFS, and expertise in Continuous Integration/Continuous Deployment (CI/CD) pipelines using Jenkins, SonarQube.

Designed and developed professional-grade UIs, web applications, and backend systems while ensuring adherence to coding standards and organizational goals.

Exceptional ability to troubleshoot and resolve complex system issues, implement robust testing strategies, and optimize applications for scalability and performance.

Technical Skills:

Programming Languages:

C#, VB.NET, ASP.NET, T-SQL, PL/SQL, JavaScript, TypeScript

Frameworks & Tools:

.NET Core, .NET MVC, Entity Framework, LINQ, WCF, Web API, WPF, RabbitMQ, Kafka

Front-End Development:

Angular (2+), AngularJS, React, JavaScript, TypeScript, HTML5, CSS3, Bootstrap, jQuery

Cloud Platforms:

Azure (Functions, DevOps, API Management, Application Insights, Load Balancing), AWS (EC2, S3, CloudFormation)

Databases:

SQL Server, Oracle, MongoDB, DB2

DevOps Tools:

Azure DevOps, Jenkins, GitHub, Bitbucket, TeamCity, Octopus

Testing & QA:

N-Unit, QTP, Manual Testing

Scripting Languages:

JavaScript, Python, jQuery, knockout JS, Node JS, VB Script, Django, Flask.

Other Tools & Technologies:

SSRS (SQL Server Reporting Services), SSIS (SQL Server Integration Services), ADO.NET, Telerik, OAuth2, JWT Authentication, Microsoft Visual Studio, Microsoft Team Foundation Server (TFS), Active Directory, GIS Desktop tools.

Key Concepts:

Microservices Architecture, Event-Driven Architecture, CI/CD Pipelines, SOLID Principles, Factory Design.

CERTIFICATIONS

Azure Developer Associate (Microsoft)

AWS Certified Developer (Amazon Web Services)

EDUCATION:

Bachelors in Electronics and Communications Engineering Management from JNTUH, Hyderabad, INDIA-2015

Masters in Engineering Management from Indiana Institute of Technology, IN-2019

PROFESSIONAL EXPERIENCE

UPS

Charlotte, NC Mar 2022- Present

Sr Systems Programmer Tech/ .Net Developer

Implemented Software Development Life Cycle (SDLC) using client/server architecture (n-tier).

Participated in scrum meetings and collaborated with Business Analysts to translate business needs into functional designs, leveraging ASP.NET controls and HTML for front-end UI design.

Designed and implemented client-side and server-side validation checks, session management, and efficient data access management using ASP.NET MVC 5.2.

Developed rich content front-end using Angular, HTML5, and CSS3, designing Angular components and integrating backend ASP.NET Web APIs.

Implemented robust communication protocols (e.g., COM, TCP/IP, Serial Port) to enable real-time data acquisition and instrument control from .NET Windows Forms and WPF applications.

Developed front-end applications for instrument control with .NET (Windows Forms/WPF) with LC/MS control for instrument control.

Created and maintained stored procedures, triggers, and functions using Oracle PL/SQL, ensuring optimal database performance.

Worked on React.js Virtual DOM and React Views, implementing rendering components using custom HTML tags.

Deployed Docker-contained Spring REST services into AWS EC2 containers using AWS admin console and AWS Lambda for serverless execution.

Created reusable User Controls in VB.NET to standardize application interfaces and improve code reusability.

Developed and validated web pages using ASP.NET and VB.NET, ensuring compliance with project requirements.

Integrated RabbitMQ as a message broker, implementing both consumers and producers for data integration with Windows Services.

Designed and implemented UI layers for applications using HTML5, CSS3, Bootstrap, and JavaScript, integrating JavaScript libraries like React-Bootstrap, High charts, and Data Tables.

Used AngularJS, Node.js, and React.js for Single Page Applications (SPA), developing modular and scalable front-end systems.

Implemented RESTful services using Web API and tested endpoints with tools like Fiddler.

Designed and deployed high-performance, scalable ASP.NET applications using Microsoft SQL Server as the backend.

Extensively used AWS services such as S3, Lambda, API Gateway, Elastic Cache, and DynamoDB for cloud storage, event-driven architecture, and data management.

Managed AWS S3 buckets, defined lifecycle policies, and ensured compliance with organizational guidelines.

Developed microservices using ASP.NET Core, RabbitMQ, and AWS Lambda, integrating them into a CI/CD pipeline with Jenkins and GitHub.

Integrated SonarQube into CI/CD pipelines (Azure DevOps/Jenkins) to automate code quality checks and enforce clean code standards for ASP.NET MVC and Web API projects

Refactored front-end code from Blazor to Angular to improve compatibility and performance.

Designed and integrated Elasticsearch with SQL Server for efficient data searching and retrieval.

Maintained version control with Git, documented new features, and facilitated seamless application updates.

Designed and developed microservices using Java, Spring IO, Maven, and MongoDB, deploying them with CI/CD pipelines through Code Envy, Bitbucket, Nexus, and Jenkins.

Integrated ArcGIS Web Map Service with Silverlight applications, displaying map services seamlessly within applications.

Implemented SOA by creating and consuming Web Services in VB.NET, facilitating efficient communication between distributed systems.

Designed and developed user interfaces using JSP, HTML, CSS, JavaScript, jQuery, and AJAX, incorporating client-side validations.

Worked extensively on SQL Server Integration Services (SSIS) and SQL scripts to develop data packages, stored procedures, and triggers for optimized database operations.

Developed front-end screens using Angular, Blazor, and Bootstrap, ensuring responsiveness and cross-browser compatibility.

Utilized relational and NoSQL databases such as Oracle, SQL Server, and DynamoDB for robust and efficient data storage solutions.

Provided excellent client support during application release cycles, following Agile Scrum methodologies.

Deployed .NET Core applications to Docker containers, configuring pipelines in GitHub for seamless testing and deployment.

Ensured the performance and reliability of applications by implementing dynamic schemas and optimizing database queries.

Environment: .NET Framework 4.5/4.8, C#, ASP.NET 4.5, SQL Server 2018, Web API, IIS 7/6, TFS, Microsoft Visual Studio 2019/2022, Arc GIS, XML, WCF, HTML, CSS3, Java Script, EXT, Java Script, Django, Flask, Blazor, Angular 13/15/17.

Key Achievements:

Enhanced Application Performance & Scalability by Full-Stack Development & UI Modernization

Refactored Blazor-based UI to Angular for improved performance and compatibility.

SunTrust

Atalanta, GA May 2020 – Feb 2022

.Net Developer

Designed and developed Web Pages using ASP.NET, VB.Net, C#.NET, HTML, JavaScript, CSS, and server controls for the processing systems. Configured ArcGIS Web Map Service to ArcGIS Server.

Created and deployed XML Web Services (WCF) using ASP.NET and C#, used them to generate the proxy class files based on the web services and consumed in web application.

Experience in AWS Cloud platform and its features which includes EC2, AMI, EBS, Cloud watch, AWS SQS and AWS S3. Worked extensively with IDEs like Microsoft Visual Studio, Eclipse, IntelliJ.

Designed and developed the Application using Angular2/7 along with HTML5, CSS and TypeScript and Bootstrap, Spring, Hibernate, MySQL. Used Node.JS, Express.JS to create server-side API with MongoDB

Modified and developed existed application systems using Go Lang Framework and created web services using gRPC technologies. Proficiently developed applications using MVC, Blazor server-side and Web API with entity framework.

Experienced in using JSON objects to communicate between AJAX request and response, pass as the parameters to the JavaScript functions. Experience with Amazon Web Services' Cloud Storage, AWS S3

Experience NodeJS - programming platform which uses googles JavaScript engine on a backend system to run JavaScript code, like a JVM. Used Rest methodology for the service layer interface and used JSON for the data transformation.

Created Typescript reusable components and services to consume REST API's using Component-based architecture provided by Angular 2. Designed and executed on-prem to AWS cloud migration projects.

Developed and designed the web interface using HTML5, CSS3, JavaScript, jQuery, Django, Flask, Nginx, ReactJS and Bootstrap

Effectively used jQuery a concise JavaScript Library for traversing HTML document, event handling and AJAX interactions.

Extensively used ASP.Net MVC architecture for the Web application design to have the application layers loosely coupled.

Experience in Micro-service architecture and API gateways. Experience with Docker and Kubernetes container orchestration platform. Setup end-to-end testing framework in replacement for casperJS using PhantomJS, selenium.

Developed Web Forms for User Interfaces using ASP.NET and VB.NET using Server Controls, HTML Controls and User Controls.

Expertise in Azure Infrastructure Management (Azure web role, Worker role, SQL Azure, Azure Storage) and involved in developing the Azure Solution and Services like PaaS and IaaS.

Using AWS Opsworks to automatically spin-up API instances by running backend chef recipes.

Built the reusable service components using ReactJS Components with Object Oriented JavaScript, jQuery, HTML, CSS3 based on the visual designs.

Created Azure Web Application projects, updated and deployed ASP.NET Web apps, Web Jobs using visual studio, GitHub, and Azure Resource Manager. Developed and Deployed Back-End DB to Azure Cloud Service.

Migrated SQL Server DB to SQL Azure DB using SQL Azure Migration Wizard.

Experienced in designing, developing, implementing, and supporting end-to-end software systems for policy administration and maintenance within the Workers’ Compensation Insurance domain.

Proven track record in developing and maintaining robust applications for policy billing, collections, and payment processing for both Workers’ Compensation and Disability Insurance programs.

Built and supported web-based and client-server solutions enabling quote processing workflows, in alignment with regulatory and compliance guidelines specific to Workers’ Compensation Insurance.

Collaborated closely with business analysts and underwriters to implement rule-based logic for quote generation, eligibility checks, and premium calculations.

Ensured seamless integration with backend systems including SQL Server/Oracle, third-party APIs, and internal services to support the full policy lifecycle.

Provided production support and resolved critical issues related to policy administration, billing discrepancies, and quote generation, improving operational reliability and system uptime.

Developed presentation layer using HTML5 and CSS3, jQuery, React Js, Backbone JS.

Designed and implemented application using C#, ASP.NET MVC 3.0 with Razor View Engine, jQuery, AJAX, HTML, JavaScript. Implemented Data Access Layer using ADO.NET, Entity Framework and LINQ.

Wrote PL/SQL stored procedures for implementing business requirements of Plan view application (oracle).

Created Tables, CTE, Indexes, Triggers, Views, joins using SQL SERVER.

Created Terraform scripts for EC2 instances, Elastic Load balancers and several other AWS services. Create detailed test planning and test cases for different User Stories.

Implemented Azure Application Insights to store user activities and error logging.

Developed a code generator software that essentially built SQL, PL/SQL and Oracle DB.

Supported for Mongo DB and Cassandra DB. Created Jobs, packages and Reports on SQL SERVER.

Implemented Authentication for NO SQL DB through Cassandra connection scripts for enabling the script to run.

Used Team Foundation Server (TFS), Test Driven Development (TDD) project related document sharing and Team Collaboration. Worked on NoSQL Databases like Raven DB, Mongo DB and Cassandra, Couch DB, Redis, Dynamo DB.

Deployed Docker contained Spring boot-microservices into Spring EC2 container service using AWS admin console Experience with building Docker Images and running them on Docker containers.

Created Views by applying complex queries on multiple tables to create the virtual tables and implemented Cursors in Stored Procedures using SQL Server 2008/2012, Implemented Joins in Stored Procedures to get the desired data by joining multiple tables. Used GitHub as the source control, Source Tree to maintain features and JIRA for project tracking.

Environment: Net Framework 4.5/4.0, C#, ASP.NET 4.5, SQL Server2012, GIT, AngularJS 2, Bootstrap, WCF Data Service, Fiddler, Web Services, WEB API, IIS 7/6.BIT BUCKET, JIRA, CI Tools, Microsoft Visual studio 2012/2015, XML, XSL, WCF

Key Achievements:

Enhanced Application Cloud Migration & Infrastructure Automation

Microservices & API Development-Implemented RESTful APIs with Node.js, Express.js, and MongoDB, improving backend communication and performance.

Refactored web interfaces using Angular, React.js, Bootstrap and Blazor, improving user experience and responsiveness.

CTA

Chicago, IL. Dec 2017 to April 2020

.Net Developer

Worked as .Net Developer in the team for designing and developing the application using Visual Studio 2013 .Net Framework 4.5, C#, ASP.NET4.5, SQL Server 2012, and Linq Entity Framework.

Effectively involved in various stages of development of the project starting from the project planning until production and maintenance using agile methodology. Worked on Microsoft Office Add in’s (PowerPoint, Word, EXCEL, and OUTLOOK).

Worked as .Net Developer in the team for designing and developing the application using Visual Studio 2013 and 2015, .Net Framework 4.5, C#, ASP.NET4.5, SQL Server 2012, and Linq Entity Framework.

Code and Test Task Management logic for embedded voice messaging units in Python, Eclipse/PyDev, Proprietary libraries and state management.

Create custom workflow by overriding using standard business logic using Python.

Managed and maintained Oracle and NoSQL databases in production domain.

Identified and recommended security and disaster recovery practices/procedures based on cost benefit analysis.

Worked on SharePoint 2013 to develop and maintain few of the applications which is dependent on Add in applications.

Developed the classes using C#, which incorporate 3-tier architecture.

Designing and implementing Java services (Java, RabbitMQ, Elasticsearch, Linux, MySQL, threads, Json, XML, RESTful APIs etc).

Create Cosmos scripts which pull data from upstream structured streams and include business logic & transformations to meet the requirements. Created Short URL’s Using Ionic framework and SAS.

Brief experience on implementing the Angular 2.0 in creating animations based on ionic classes.

Used the Microsoft Visual Studio Code to develop the Ionic project using Typescript. Extensively used Ionic framework, and jQuery to provide UI functionality.

Involved in requirement analysis and application designing sessions Designed and implemented the Web Pages of project using ASP.NET& C#. Used web services (WCF Service) to interact with data layer to access data from the database.

Developed Single tire and multi tire Frameworks in WCF

Designed and implemented the company’s first RabbitMQ message-based application and event tracking system to facilitate centralized logging for all applications across the company.

Coordinated and managed resources responsible for the development, validation and maintenance of Security, Disaster Recovery, and Capability plans. Minimized the impact of major system outages to critical patient care and business operations.

Worked on React JS framework to develop interactive websites based on client needs.

Experience in Python scripting language for writing Data science and machine learning based algorithms.

Integrated applications with external systems using a combination of web services and APIs. Worked with Web API to provide services to HTTP requests. Building REST APIS using Asp.net Core, deploying using docker containers.

Experience with Kubernetes container orchestration platform. Involved in resolving major bug fixes within the application.

Developing Prototype for the project using Ajax, JSON, jQuery, JavaScript, HTML5 and CSS3.

Managed and Administration of AWS services EC2, VPC, S3, Cloud Trail, Trusted Advisor services and Migration Services.

NetWeaver gateway ODATA service design end to end like Entities, Deep entities, Associations, Function imports, complex types implementing CURD methods, Data dictionary.

Written Unit Test cases for all the functionalities.

Responsible for creating Web Tests and Load Tests for the various application modules.

Performed all tuning, backup planning, disaster recovery, upgrades, patching, security configurations requirements, and monitoring and troubleshooting.

Developed front-end UI pages and necessary backend classes to support data access and user authorization.

Environment: Net Framework 4.5/4.0, C#, ASP.NET 4.5, SQL Server2012, GIT, AngularJS 2, Bootstrap, WCF Data Service, Fiddler, Web Services, WEB API, IIS 7/6.BIT BUCKET, JIRA, CI Tools, Microsoft Visual studio 2012/2015, XML, XSL, WCF

Key Achievements:

Managed AWS services, including EC2, VPC, S3, and migration services, to optimize cloud infrastructure and application performance.

Developed and managed RabbitMQ-based event tracking system for centralized logging and improved application monitoring.

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